Comment Consider the Fit-PC slim? (Score 1) 697
I picked up one of these:
http://www.fit-pc.com/fit-pc1/whats-new.html
for $200. It's running Ubuntu 8.04 with LXDE pretty reasonably and being an excellent Squeezebox Server. Peaks at 5W and is fanless, so it's virtually silent.
Previously I used an old laptop, but the fan whine drove me nuts and it was sucking 15-20W even at idle.
The 330Gb Hard drive cost me an extra $150 and it only works with parallel ATA, but worth a look.